1139873228 has 18 divisors (see below), whose sum is σ = 2160027324. Its totient is φ = 526095024.

The previous prime is 1139873209. The next prime is 1139873237. The reversal of 1139873228 is 8223789311.

It is a super-2 number, since 2×1139873228² = 2598621951822279968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 842426 + ... + 843777.

It is an arithmetic number, because the mean of its divisors is an integer number (120001518).

Almost surely, 2^1139873228 is an apocalyptic number.

It is an amenable number.

1139873228 is a deficient number, since it is larger than the sum of its proper divisors (1020154096).

1139873228 is a wasteful number, since it uses less digits than its factorization.

1139873228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686233 (or 1686218 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 1139873228 is about 33762.0086487756. The cubic root of 1139873228 is about 1044.6052026968.

The spelling of 1139873228 in words is "one billion, one hundred thirty-nine million, eight hundred seventy-three thousand, two hundred twenty-eight".